EP2170439B1 - A cannula-insertion device - Google Patents

A cannula-insertion device Download PDF

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Publication number
EP2170439B1
EP2170439B1 EP08763617.1A EP08763617A EP2170439B1 EP 2170439 B1 EP2170439 B1 EP 2170439B1 EP 08763617 A EP08763617 A EP 08763617A EP 2170439 B1 EP2170439 B1 EP 2170439B1
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EP
European Patent Office
Prior art keywords
cannula
inserter
unit
cartridge
penetrating
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08763617.1A
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German (de)
English (en)
French (fr)
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EP2170439A1 (en
Inventor
Ofer Yodfat
Avraham Neta
Illai Gescheit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Roche Diabetes Care GmbH
Original Assignee
F Hoffmann La Roche AG
Roche Diabetes Care GmbH
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Publication of EP2170439A1 publication Critical patent/EP2170439A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
    • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
    • A61B5/6848—Needles
    • A61B5/6849—Needles in combination with a needle set
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/42—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for desensitising skin, for protruding skin to facilitate piercing, or for locating point where body is to be pierced
    • A61M5/422—Desensitising skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
    • A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • A61M2005/14252—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type with needle insertion means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • A61M2005/1426—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type with means for preventing access to the needle after use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1581—Right-angle needle-type devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1585—Needle inserters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3606—General characteristics of the apparatus related to heating or cooling cooled
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/362—General characteristics of the apparatus related to heating or cooling by gas flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3673—General characteristics of the apparatus related to heating or cooling thermo-electric, e.g. Peltier effect, thermocouples, semi-conductors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/1413—Modular systems comprising interconnecting elements

Definitions

  • the present invention generally relates to medical devices, and particularly to devices that administer medication into the body of a patient and/or sense analyte levels in a bodily fluid. More particularly, some embodiments of the present invention are directed to an insertion device and a method for manual or automatic insertion of a cannula into a human body for delivering a drug using a skin adherable patch unit and/or for continuous sensing of a bodily analyte.
  • Continuous subcutaneous delivery of medication or monitoring of a body analyte is often accomplished using a cannula inserted into a human body that remains in place for several days. Diabetes patients may use such cannula, which is positioned in a subcutaneous compartment for continuous delivery of insulin by pumps or for monitoring interstitial glucose levels by sensors.
  • a combination of a tube connecting the insulin pump to the cannula and a detachable connector is often referred to as an infusion set.
  • Such infusion sets and modes of their insertion are disclosed, for example, in U.S. Patents Nos. 4,755,173 , 5,176,662 and 5,257,980 .
  • Subcutaneous cannula insertion modes for continuous glucose monitoring are discussed, for example, in U.S. Patents Nos.
  • trans-cutaneous (“hypodermic”) cannula insertion can be carried out with a sharp metal penetrating member to be withdrawn after skin piercing. This procedure can be carried out manually by the user/patient.
  • the insertion is usually painful and requires considerable skill. Some patients are reluctant or hesitant to pierce their own skin, and thus, encounter difficulties in proper cannula insertion. Such difficulties can be attributed to insufficient manual dexterity or, alternatively, to anxiety associated with anticipated discomfort as the needle pierces the skin.
  • This problem can be especially significant when an insulin pump is used, since misplacement of the cannula can cause kinking, incorrect insertion angle or incorrect cannula insertion depth leading eventually to cannula obstruction. As a result, delivery of insulin could be hampered thereby causing a life-threatening situation.
  • the cannula is rigidly connected to the pump's housing. After adhesion to user's skin, the cannula is fired, thereby emerging from the device's housing and piercing the skin. Consecutively, the penetrating member is retracted back into the pump's housing.
  • This device is relatively bulky, heavy and indiscreet because the spring-loaded mechanism is deployed within the device's housing during the entire period of usage.
  • the cannula has only a single length size and penetrates the skin only at a certain angle; the patient cannot adjust these parameters based on various insertion sites and other clinical requirements.
  • Continuous glucose monitors are disclosed in U.S. Patent Nos. 5,390,671 and 6,143,164 , assigned to MiniMed and E. Heller & Company, respectively. These devices monitor glucose levels in the subcutaneous compartment using a sensor, which is inserted manually or automatically in a fashion similar to the insertion of a cannula, as disclosed in U.S. Patent No. 7,110,803 , assigned to DexCom.
  • Document US-A-2004/0158207 describes a device for inserting a cannula into tissue.
  • the present invention relates to an automatic insertion apparatus as claimed in claim 1 (e.g., a single cannula or multiple cannulae) that can be used for delivery of medication (e.g., insulin) and can be used for continuous monitoring of body analyte (e.g., glucose).
  • medication e.g., insulin
  • body analyte e.g., glucose
  • the present invention relates to an automatic insertion of two cannulae coupled to a single patch, wherein one cannula is used for delivery of medication and the other for continuous monitoring of a bodily analyte.
  • a patch could include one cannula for drug delivery and one sensor for sensing analytes.
  • the present invention further allows insertion of a cannula at any desired depth, i.e., the user can choose the desired cannula length size. Further, the cannula can be inserted at any desired angle.
  • the cannula insertion device can fit comfortably in the user's hand.
  • the cannula insertion device can include minimal number of parts, which is easy to assemble, and which is inexpensive.
  • the cannula insertion device can be either reusable or disposable.
  • the present invention relates to an inserter device for a precise placement of a cannula within a body of a user.
  • the device can be used for automatic insertion of a cannula that is employed together with, for example, a fluid dispensing device (which is also referred to herein as a fluid delivery pump).
  • the pump can be configured as a remote-controlled skin adherable patch (also, referred to herein as a dispensing patch unit) allowing programmed fluid delivery.
  • the pump also can include means for continuous analyte level monitoring.
  • the dispensed fluid is insulin and the monitored analyte is glucose.
  • the dispensing device includes the following three units:
  • the cannula delivering the fluid also includes a sensor for monitoring a bodily analyte (e.g., glucose). Fluid delivery can be adjusted based on sensor inputs (in a semi- or fully-closed-loop system).
  • the dispensing patch unit can include both the cannula for fluid delivery and a sensor for analyte sensing, which can both be inserted into the body.
  • the present invention relates to an automatic insertion of the cannula for delivery of medication to a patient using the fluid delivery skin adherable patch pump.
  • the present invention relates to an automatic insertion of a sensor suitable for continuous analyte monitoring and that can be adhered to the skin of the patient.
  • the present invention relates to an automatic insertion of a single cannula that can be used for delivery of medication (e.g., insulin) and for continuously monitoring of body analyte (e.g., glucose).
  • medication e.g., insulin
  • body analyte e.g., glucose
  • the present invention relates to an automatic insertion of two cannulae coupled to one patch, where one cannula is used for delivery of medication and the other for continuously monitoring a body analyte.
  • the patch contains one cannula for drug delivery and one sensor for sensing and monitoring analytes.
  • the present invention relates to manual and/or automatic insertion of a cannula that can pass through a "well assembly" and be inserted into a subcutaneous compartment.
  • the cannula can pass through a "cradle unit” and be inserted into the subcutaneous compartment.
  • the cannula can be inserted at any desired depth, i.e., the user can choose the desired cannula length size and/or any desired angle.
  • the cannula can be inserted and the penetrating member can be retracted manually. In some embodiments, insertion of the cannula and retraction of the penetrating member are automatic. In some embodiments, insertion of the cannula is automatic and retraction of the penetrating member is manual.
  • a cannula insertion device allows precise alignment of the cannula relative to the "well assembly". Highly accurate alignment is desirable for the following reasons: 1) it avoids tearing of the well's lower gasket, thus, maintaining intact sealing; 2) it permits skin penetration at any desired angle; 3) it provides sealing of the upper opening with the rubber cap; and 4) it allows precise placement of the cannula within the well and maintenance of flow communication.
  • the cannula insertion device maintains precise alignment of the cannula relative to the "cradle unit" and maintains connection of the cannula to the cradle after insertion.
  • the cannula insertion device can be connected to the cradle unit before adhesion and used as a means for attaching the cradle unit to the patient's body. In some embodiments, the cannula insertion device can be automatically detached from the cradle unit after the cannula has been inserted, for example, to avoid unintentional detachment of the cradle from the skin.
  • the cannula insertion device is spring-loaded.
  • the spring can be loaded by the patient and released upon patient's discretion.
  • the inserter can be configured to prevent unintentional or premature firing.
  • the cannula insertion device is suitable for use in conjunction with a cannula protector.
  • the cannula protector can be easily manipulated by the user and may be receivable within the inserter and positioned in a single spatial direction.
  • the cannula insertion device fits comfortably in the user's hand.
  • the cannula insertion device has relatively few parts, which are easy to assemble and are inexpensive.
  • the cannula insertion device can be reusable.
  • the cannula insertion device can be disposable.
  • the present invention relates to an automatic insertion of the cannula and/or the sensor used in association with the skin adherable infusion pump having analyte sensing and drug dispensing capabilities and in which the fluid dispensing can be adjusted according to analyte sensing (in semi- or fully-closed loop mode).
  • the inserter can be preloaded with the cannula cartridge unit and the cradle unit. Upon spring loading, the user attaches the cradle unit to the skin and pushes a release button. A spring loaded flywheel forcibly pushes the cannula and the penetrating member through the well into the body.
  • the penetrating member is automatically retracted into the protector while the cannula hub remains connected to the well.
  • the inserter is detached from the cradle unit and the protector (with penetrating member inside) is unloaded from the inserter and is disposed of.
  • the inserter can be preloaded with at least one (or more than one) cannula cartridge unit.
  • the present invention includes a disposable inserter preloaded with the cannula cartridge unit and after cannula insertion, the used protector (with the penetrating member inside) remains within the inserter's housing, which is then can be discarded.
  • the present invention provides an inserter that allows for passing of the cannula through the well assembly and its penetration through the skin. After insertion, the cannula remains in the body, the cannula hub is secured to the well and the penetrating member can be retracted.
  • the inserter enables alignment of the cannula with the cradle unit. In some embodiments, the inserter enables alignment of the cannula with the outlet port in the dispensing patch unit's housing and the passage of the well assembly.
  • the inserter includes a drum member suitable for retaining one or more cannula cartridge units. In some embodiments, the inserter contains safety means for preventing inadvertent or premature insertion.
  • the safety means may be an integral part of the inserter or it may be an additional component which is detachable from the inserter before operation. In some embodiments, safety means are provided for disposing of the sharp penetrating member after manual retraction of penetrating member from the body.
  • a skin adherable insulin delivery device was disclosed in a co-owned/co-pending International Patent Application No. PCT/IL07/000932, filed July 24, 2007 , claiming priority to U.S. Provisional Patent Application No. 60/833,110, filed July 24, 2006 , and U.S. Provisional Patent Application No. 60/837,877, filed August 14, 2006 , and also disclosed in a co-owned/co-pending U.S. Patent Application No. 12/004,837 , and International Patent Application No. PCT/IL07001578, both filed December 20, 2007 and both claiming priority to U.S. Provisional Patent Application No. 60/876,679, filed December 22, 2006 .
  • the device contains a remote control unit and a skin adherable unit ("dispensing patch unit").
  • the dispensing patch unit is coupled to a unique cannula apparatus, which does not require an infusion set and long tubing.
  • the cannula apparatus allows the patient to choose the desired depth and angle for cannula insertion.
  • the device is provided with a "well assembly" connected to an insulin delivery tube.
  • the well assembly has an upper opening and a lower opening sealed by rubber gasket.
  • the insertion apparatus is provided also with a "penetrating cartridge" having a cannula, a penetrating member and a rubber cap. The penetrating cartridge allows for the cannula to penetrate through the well assembly and then through the skin, while keeping the upper opening sealed and maintaining the delivery of insulin.
  • the device includes a "cradle unit".
  • the cradle unit is configured as a sheet with an adhesive layer that is attached to the skin before cannula insertion, and is used to allow connection and disconnection of the dispensing patch unit to and from the body.
  • the cannula is inserted through the cradle unit into the skin and remains secured at the cradle unit after insertion.
  • the penetrating member which is configured as a sharp needle, is then retracted and disposed of.
  • a device and a method are disclosed for protecting the user from unintentional pricking by providing a protective cover that shields the penetrating cartridge, further referred to as a "protector".
  • the protector is detachably connectable to the cradle unit and consecutively the cannula can be manually or automatically inserted. Upon insertion and piercing of the skin, the penetrating member is retracted into the protector and both items can be disposed of.
  • Continuous glucose monitors are disclosed in a co-owned/co-pending International Patent Application No. PCT/IL07/001096, filed September 5, 2007 , claiming priority to U.S. Provisional Patent Applications No. 60/842,869, filed September 6, 2006 , and International Patent Application No. PCT/IL07/001177, filed September 25, 2007 , claiming priority to U.S. Provisional Patent Application No. 60/848,511, filed September 29, 2006 .
  • FIG. 1a shows an example of the fluid delivery device in which the inserter of the present invention can be implemented.
  • the delivery device includes a dispensing patch unit (10) and a remote control unit (40).
  • the dispensing patch unit (10) can include a single part (as shown in FIG. 1b ) or two parts (as shown in FIG. 1c ), i.e., a reusable part (100) and a disposable part (200).
  • the dispensing unit (10) communicates with the remote control unit (40) that can forward commands, receive and process instructions from the dispensing unit (10), etc.
  • the remote control unit (40) can include a display and a plurality of buttons to control operation of the units (10) and (40).
  • the units (10) and (40) can communicate with a wireless, wired, wire line, RF or any other type communication.
  • the unit (40) can be a personal computer, a laptop, an iPod, a PDA, a cellular telephone, a remote control, or any other suitable device.
  • fluid delivery can be programmed solely by a remote control unit (40) having a bidirectional communication link with the transceiver provided in the dispensing unit (10).
  • FIGS. 2a-c show an example of a direct adherence of the dispensing patch unit (10) to the skin (5) of the user/patient.
  • FIG. 2a shows peeling of an adhesive protective sheet (101) from the dispensing patch unit (10).
  • FIG. 2b shows adherence of the dispensing patch unit (10) to the skin (5).
  • FIG. 2c shows the dispensing patch unit (10) being adhered to the skin (5) and ready for operation.
  • the fluid dispensing device can be provided with a cradle unit (20), which can be adhered first to the skin (5).
  • the dispensing patch unit (10) can then be connected to and disconnected from the cradle unit (20) upon patient's discretion.
  • An example of the device employing a cradle unit is disclosed in a co-pending/co-owned U.S. Patent Application No. 12/004,837 , and International Patent Application No. PCT/IL07001578, both filed December 20, 2007 and both claiming priority to U.S. Patent Application No. 60/876,679, filed December 22, 2006 .
  • FIG. 3a shows the cradle unit (20) being adhered to the skin (5).
  • FIG. 3b shows connection of the dispensing patch unit (10) to the adhered cradle unit (20).
  • FIG. 3c shows the dispensing patch unit (10) being connected to the cradle unit (20) and ready for operation.
  • FIGS. 4a-b are side and upper views, respectively, of the cradle unit (20).
  • the cradle unit (20) includes the following elements:
  • FIG. 4c shows an exemplary cradle unit (20) having the cradle base (300) and the well (310).
  • FIG. 5 schematically shows an exemplary inserter (800) loaded with a cannula cartridge unit (700), according to some embodiments of the present invention.
  • the cannula cartridge unit (700) includes a protector (710) and a penetrating cartridge (711).
  • the penetrating cartridge (711) includes a cannula (713) that allows maintaining of fluid (e.g., insulin) delivery from the dispensing patch unit to the body and/or analyte (i.e., glucose) sensing/monitoring.
  • the penetrating cartridge (711) further includes a penetrating member (716) for piercing the skin (5) and facilitating insertion of the cannula (713).
  • the protector (710) has a protective cover that contains and further guards the cannula (713) and the penetrating member (716).
  • One of the purposes of the protective cover is to prevent the user from unintentional skin piercing.
  • the protector (710) can have any shape or size and can store a plurality of cannulae.
  • the inserter (800) allows either automatic or manual protraction of the cannula (713) and the penetrating member (716) from the protector (710) into the body of the (i.e., a hypodermic cannula insertion), as will be described in detail below.
  • the penetrating member (716) pierces the skin (5), thereby allowing insertion of the cannula (713).
  • the cannula (713) continues to remain in the body and the penetrating member (716) can be retracted back into the protector (710).
  • the insertion process terminates with the unloading of the protector (710) (with the penetrating member (716) disposed inside) from the inserter (800) and disposal of the protector (710).
  • the penetrating cartridge (711) alone is disposed within the inserter (800).
  • the insertion process can be carried out as disclosed in co-owned, co-pending International Patent Application No. PCT/IL07/001454, filed November 26, 2007 , claiming priority to U.S. Provisional Patent Application No. 60/861,345, filed November 28, 2006 , and U.S. Patent Application No. 12/004,837 , and International Patent Application No. PCT/IL07001578, both filed December 20, 2007 and both claiming priority to U.S. Provisional Patent Application No. 60/876,679, filed December 22, 2006 .
  • the inserter can be connected to the cradle unit (20), or to a skin-adherable dispensing patch unit using either a well assembly or an infusion set.
  • the inserter can also be connected to an infusion set used with a non-adherable dispensing device (e.g.," pager-like").
  • the inserter (800) is loaded with the cannula cartridge unit (700) and connected to the cradle unit (20). After cannula insertion process is completed, the inserter (800) can be disconnected from the cradle unit (20), and the dispensing patch unit can be connected to the cradle unit (20).
  • FIG. 6b shows the inserter (800) loaded with the cannula cartridge unit (700) and connected to a well assembly (102) located in the dispensing patch unit (10).
  • the dispensing patch unit can be either a single part unit or a two-part unit, as discussed above.
  • the well assembly (102) includes an inlet port (103) on its side to allow passage of dispensed fluid from a reservoir (220) (disposed inside the dispensing unit (10)) via the delivery tube (230) to the cannula (713).
  • the cannula (713) includes a lateral opening through which fluid passes via the cannula into the body of the user.
  • FIG. 6c shows the inserter (800) loaded with the cannula cartridge unit (700) and connected to an infusion set (110).
  • the infusion set (110) includes a hub (112) and a short connecting tube (114) extending from the dispensing patch unit (10) to a proximate insertion site.
  • the connecting tube (114) allows for fluid communication between the reservoir (220) of the unit (10) and the cannula (713).
  • FIGS. 7a-c show various ways of loading the cannula cartridge unit (700) into the inserter (800).
  • the cannula cartridge unit (700) can be loaded into the inserter (800) through a bottom opening (821) in the inserter (800) (as shown in FIG. 7a ), an upper opening (822) in the inserter (800) (as shown in FIG. 7b ), or a lateral opening (823) in the inserter (800) (as shown in FIG. 7c ).
  • the unit (700) can be placed into the inserter (800) in any other fashion and such placement is not limited to the embodiments shown in FIGS. 7a-c .
  • FIG. 8a schematically shows an inserter configured as a pen (800) (hereinafter, referred to as “pen-like") coupled to a cradle unit (20) via the well (310).
  • FIG. 8b schematically shows an inserter configured as a "computer mouse” (900) (hereinafter, referred to as “mouse-like”) coupled to the cradle unit (20) using anchoring means (302), (304) provided on the upper face of the cradle base (300).
  • the anchoring means (302), (304) can be latches, snap-fit mechanisms, VELCRO® devices, etc. As can be understood by one skilled in the art, the examples shown in FIGS.
  • FIG. 9a is a perspective view of the exemplary cannula cartridge unit (700), according to some embodiments of the present invention.
  • the unit (700) includes the protector (710).
  • the protector (710) includes a bottom opening (749) and an upper opening (748).
  • the bottom opening (749) is configured and dimensioned to fit either over a well assembly (not shown in FIG. 9a ) or over an infusion set hub (not shown in FIG. 9a ) or over a well which is a part of the cradle unit (not shown in FIG. 9a ). Insertion of the cannula (713) is carried out by protracting the penetrating cartridge (it is concealed within the protector (710), and hence, not shown in FIG. 9a ) manually or automatically.
  • the protraction can be done using a dedicated rod inserted through the protector's upper opening (748) or using dedicated engagement hooks provided in the inserter and configured to penetrate the protector (710) through at least one longitudinal slit (722), (722') provided in the main body portion of the protector, as will be described in detail below.
  • a single protector can accommodate placement of cannulae and/or sensors having various shapes and/or sizes (length, width, height, etc.).
  • An example of such protector is disclosed in co-pending, co-owned International Patent Application No. PCT/IL08/XXXXX, and U.S. Patent Application No.
  • FIG. 9b is a cross-sectional view of the exemplary cannula cartridge unit (700) having the protector (710) and the penetrating cartridge (711), according to some embodiments of the present invention.
  • the penetrating cartridge (711) has the following elements: the penetrating member (716) having a grip portion (712) located at the blunt end of the penetrating member (716), the cannula (713) and a cannula hub (714) attached to the cannula (713) and containing a rubber septum (311) for maintaining the upper opening of the cannula (713) sealed upon insertion of the cannula into the body.
  • the septum (311) can be pierced repeatedly by a connecting lumen (not shown in FIG. 9b ) provided in the disposable part of the dispensing patch unit.
  • the connecting lumen maintains fluid communication between the reservoir (not shown in FIG. 9b ) and the cannula (713).
  • the cannula insertion process can be carried out either manually (i.e., both the cannula insertion and the penetrating member retraction are performed manually), semiautomatically (i.e., the cannula insertion is automatic while the penetrating member retraction is manualor vice versa), or fully automatic (i.e., both the cannula insertion and the penetrating member retraction are performed automatically).
  • manually i.e., both the cannula insertion and the penetrating member retraction are performed manually
  • semiautomatically i.e., the cannula insertion is automatic while the penetrating member retraction is manualor vice versa
  • fully automatic i.e., both the cannula insertion and the penetrating member retraction are performed automatically.
  • FIGS. 10a-i are cross-sectional views of the inserter (800) being loaded with the cannula cartridge unit during a manual insertion process, according to some embodiments of the present invention.
  • Manual insertion can be carried out either using the cannula cartridge unit (700) as a stand-alone item with the aid of a rod (760), as shown in FIG. 10a .
  • the manual insertion process can be carried out using the inserter (800) preloaded with the cannula cartridge unit (700) and using a rod (860), as shown in FIG. 10b .
  • the insertion process in both embodiments is similar.
  • FIGS. 10c-i illustrate an exemplary insertion process using the inserter (800) connectable to the skin adherable cradle unit (20).
  • FIG. 10c shows the inserter (800) loaded with the cannula cartridge unit (700) and the cradle unit (20) prior to its connection to the inserter (800) and the cannula cartridge unit (700).
  • the cradle unit (20) includes the well (310) disposed in the base (300) and having a snapping engagement mechanism with at least one resistance loaded latch (313).
  • the cannula cartridge unit (700) includes at least one notch or recess (744) that corresponds and is configured to accommodate insertion of the latch (313).
  • the cannula cartridge unit (700) is placed over the well (310), thereby snapping the notch (744) over the latch (313) and therefore locking the unit (700) to the well (310).
  • the cannula cartridge unit (700) can be only placed over a well (310) without being connected to the well (310).
  • the connection between the cannula cartridge unit (700) and the well (310) when the unit (700) is brought toward the well (310) is as illustrated by the arrow in FIG. 10c .
  • the connection is established between the inserter (800) and the cradle unit (300).
  • FIG. 10d shows the inserter (800) connected to a cradle unit (20) and ready for operation.
  • the dedicated rod (860) is disposed outside the top end of the inserter (800).
  • the rod (860) can include a handle (861) and a push rod portion (862) that can be located opposite the handle (861).
  • the cannula cartridge unit (700) includes the penetrating cartridge (711) having the grip portion (712) that interacts with the push rod portion (862) of the rod (860).
  • the push rod portion (862) can include a recessed portion (863) at its top that accommodates placement of the handle (861). The recessed portion (863) secures the handle (861) and prevents wobbling of the handle (861) when the latter is being pushed down the cannula cartridge unit (700).
  • the handle and the push rod portion are configured to constitute a single item.
  • FIG. 10e shows the penetrating cartridge (711) being pushed down by the dedicated rod (860) through the well (310) and into the subcutaneous tissue (4) of the user.
  • the user pushes on the handle (861) of the rod (860) to thrust the rod (860) in a downward direction toward the well (310).
  • the force that the user applies to the handle (861) of the rod (860) is transferred to the push rod portion (862), which pushes the penetrating cartridge (711) down toward the skin (5) of the user.
  • the penetrating cartridge (711) As the penetrating cartridge (711) is pushed down, the penetrating member (716) contained within the penetrating cartridge (711) pierces the skin (5) of the user and enters the subcutaneous tissue (4).
  • the cannula (713) is also inserted into the subcutaneous compartment (4). Once the cannula (713) is inserted, the penetrating member (716) can be removed.
  • FIG. 10f shows the penetrating member's (716) retraction back into the protector (710) using of the rod (860).
  • the cannula (713) is inserted into the subcutaneous tissue (4), the cannula hub (714) remains rigidly connected to the well (310).
  • the user pulls on the handle (861) of the rod (860) in an upward direction (or direction opposite to the direction of insertion).
  • the handle (861) of the rod (860) is secured to the recessed portion (863) of the push rod portion (862) and the push rod portion (862) is secured to the grip portion (712) that is able to slide back and forth inside the protector (710) and the inserter (800)
  • the push rod portion (862) of the rod (860) and the grip portion (712) are pulled along with the handle (861), thereby removing the penetrating member (716) from the subcutaneous compartment (4) and from the cannula hub (714).
  • the inserter (800) and/or the protector (710) can include stoppers at its top end to prevent accidental removal of the push rod portion (862) and the grip portion (712).
  • the inserter's and/or protector's interior portions can include interior stoppers to prevent excessive insertion of the penetrating member (716) and accidental slip out of the penetrating member (716) along with the grip portion (712) from the bottom end of the protector (710) once it is disengaged from the well (310).
  • the well (310) can serve as a stopper to prevent excessive insertion of the penetrating member (716).
  • FIG. 10g shows disconnection of the inserter (800) from the cradle unit (20).
  • the inserter (800) is removed by disengaging the notches (744) from the latches (313). This can be done by pulling the notches (744) away from the latches (313) or by pushing a button that pulls the notches (744) out, or using any other means.
  • the inserter (800) Upon being removed from the cradle unit (300), the inserter (800) continues to conceal the penetrating member (716) inside the protector (710) along with the penetrating member's grip portion (712).
  • the handle (861) can be disengaged from the recessed portion (863) and the inserter (800) along with its contents can then be disposed.
  • the handle (861) can be reused for future cannula insertions.
  • the protector (710) with the penetrating member (716) disposed within can be unloaded from the inserter (800) and disposed.
  • the inserter (800) can be reused for future cannula insertions.
  • the inserter (800) can be disconnected from the cradle unit (20) after inserting the cannula (713) while the penetrating member (716) remains inside the body.
  • the user can manually remove the penetrating member (716) from the body by holding the grip portion (712) of the penetrating member (716) with his/her fingers and pulling it in an upward direction (or direction that is opposite to the direction of insertion).
  • FIG. 10h shows a two-part dispensing patch unit (10) prior to its connection to the cradle unit (20).
  • the dispensing patch unit (10) contains, inter alia, a fluid reservoir (220), an outlet port (213) and connecting lumen (214) that maintains fluid communication between the reservoir (220) and the outlet port (213).
  • the connecting lumen (214) pierces a septum (311) which seals the upper opening of the cannula (713), thus allowing fluid delivery via the cannula (713) to the subcutaneous tissue (4).
  • the outlet port (213) allows repetitive connection and disconnection of the dispensing patch unit (10) to and from the cradle unit (20).
  • FIG. 10i shows a two-part dispensing patch unit (10) after it has been connected to the cradle unit (20).
  • the fluid (e.g., insulin) delivery cannula (713) may contain also a sensor for monitoring a body analyte (e.g.. glucose). Fluid delivery can be adjusted according to sensor inputs (in semi or fully closed-loop mode).
  • the dispensing patch unit (10) can include both a cannula (713) for drug delivery and a sensor for analyte sensing, as described in co-owned, co-pending International Patent Application No. PCT/IL07/000163 and U.S. Patent Application No. 11/706,606 , U.S. Patent Application No.
  • FIGS. 11a-e are cross-sectional views of the inserter (800) being loaded with the cannula cartridge unit (700) during a semi-automatic insertion process, according to some embodiments of the present invention.
  • FIG. 11a shows the inserter (800) loaded with the cannula cartridge unit (700), and the cradle unit (20) prior to connection.
  • the connection between the cannula cartridge unit (700) and the cradle unit (20) is established as discussed above with reference to FIG 10c .
  • the inserter (800) can include a spring-loaded mechanism that is couplable to the grip portion (712) and upon release of the spring, pushes on the grip portion (712) to force insertion of the penetrating member (716) along with the cannula (716) into the subcutaneous tissue (4), as will be discussed below.
  • FIG. 11b shows an inserter (800) loaded with a cannula cartridge unit (700) connected to a cradle unit (20) and ready for operation.
  • the inserter (800) includes means for preventing inadvertent or premature release/firing of the cannula (713).
  • Such means could be, for example, a safety cap (855) which shields the release button (854) and is removable from the inserter (800) upon connection of the inserter to the cradle unit (20) and prior to insertion initiation.
  • FIG. 11c shows how the user is lifting the safety cap (855) and pressing the release button (854).
  • the inserter (800) can be connected to the well (310) in a fashion similar to the connection of the cannula cartridge unit (700) to the well (310) (e.g., using the latch-notch connection).
  • the penetrating cartridge (711) is consequently pushed down automatically towards the well (310), for example by a rod (852), which is displaceable by biased spring (850).
  • the inserter (800) includes a spring-loaded mechanism having a spring (850) coupled to an advancing rod (852) and a spring release button (854).
  • the spring (850) is initially in a compressed state, whereby the advancing rod (852) is disposed in a pre-firing position substantially near the top end of the inserter (800).
  • the spring release button (854) is configured to cause release of the spring (850) in a downward direction (or direction toward the skin (5)). Once the button (854) is pressed, the spring (850) is released, as illustrated in FIG. 11c . Release of the spring (850), causes the advancing rod (852) to apply pressure on the penetrating cartridge (711) thrusting it in a downward direction (or toward the skin (5)).
  • Movement of the cartridge (711) causes movement of the penetrating member (716) and the cannula (713) toward the skin (5) through the well (310), thereby forcing piercing of the skin (5) and insertion of the penetrating member (716) and the cannula (713) into the subcutaneous compartment (4).
  • the penetrating member (716) can be retracted or removed from the subcutaneous compartment (4).
  • FIG. 11d shows the penetrating member's (716) manual retraction into the protector (710) by means of a lateral protrusion (856), for example.
  • the lateral protrusion (856) is configured to move with the advancing rod (852) as it is forced downward during insertion process.
  • the user can pull on the protrusion (856) in an upward direction (or direction opposite to direction of insertion) and secure the advancing rod (852) in the pre-firing position.
  • the cannula hub (714) Upon removal of the penetrating member (716), the cannula hub (714) remains secured at the well (310), and the cannula (713) remains within the subcutaneous tissue (4). Upon removal of the penetrating member (716), the inserter (800) and the protector (710) can be disconnected from the well (310).
  • FIG. 11e shows disconnection of the inserter (800) from the cradle unit (20).
  • the protector (710) now containing only the penetrating member (716) and grip portion (712), is unloaded from the inserter (800) and then disposed of.
  • the inserter (800) can otherwise be disconnected from the cradle unit (20) after the cannula (713) has been inserted while the penetrating member (716) remaining inside the body.
  • the user manually removes the penetrating member (716) from the body by holding the grip portion (712) with his fingers and pulling it upwards together with the penetrating member (716).
  • a dispensing patch unit can be connected to the cradle unit, as previously described with reference to FIGS. 10h-i .
  • FIGS. 12a-c are cross-sectional views of the inserter loaded with the cannula cartridge unit (700) during an automatic insertion process.
  • the connection of the inserter (800) to the cradle unit (20) and the insertion of the cannula (713) and penetrating member (716) into the subcutaneous tissue (4) are performed similarly to the connection discussed above with regard to FIGS. 11a-c .
  • the inserter (800) is provided with means for automatically retracting the penetrating member (716).
  • the inserter (800) includes a retraction spring (858) that can stretch during cannula insertion process, as shown in FIG. 12a .
  • the retraction spring (858) can be configured to automatically compress once the penetrating member (716) and the cannula (713) are inserted into the subcutaneous compartment (4) and the cannula hub (714) is secured at the well (310). In some embodiments, the retraction spring (858) can compress upon pressing of the release button (854) or of a separate dedicated button (not shown in FIG. 12a ).
  • FIG. 12b shows the penetrating member (716) being retracted into the protector (710) by the retraction spring (858), while the cannula hub (714) remains connected to the well (310), and the cannula (713) remains in the subcutaneous tissue (4).
  • FIG. 12b shows the penetrating member (716) being retracted into the protector (710) by the retraction spring (858), while the cannula hub (714) remains connected to the well (310), and the cannula (713) remains in the subcutaneous tissue (4).
  • 12c shows the disconnection of the inserter (800) from the cradle unit (20).
  • the protector (710) now containing only the penetrating member (716), is then unloaded from the inserter (800) and disposed of.
  • the dispensing patch unit can be connected to the cradle unit, as it has been previously discussed with regard to FIGS. 10h-i .
  • FIG. 13a shows an example of a pen-like inserter (80) designed to contain within it a cannula cartridge unit (700).
  • the inserter (80) is provided with a main body portion to accommodate placement of the cannula cartridge unit (700).
  • the main body portion can be provided with an arcuate cross section to allow loading of the cannula cartridge unit (700) from the side.
  • the main body portion can otherwise be configured, for example, as a tube to allow loading of the cannula cartridge unit (700) through the bottom opening of the inserter.
  • the inserter (80) includes means for preventing inadvertent or premature firing of the cannula.
  • Such means could be, for example, a safety cap (855) which prevents contact between the two lateral triggers (809), (809') and the displacement mechanism (not shown in FIG. 13a ) within the inserter (80).
  • the safety cap (855) is removable from the inserter (80) upon connection thereof to the cradle unit (20) and prior to the insertion initiation.
  • the body portion (810) includes a bottom open end (849) to allow insertion of the body portion (810) over the well (310), and a semi-annular protrusion (812) disposed on the inwardly facing wall and near the top end of the body portion (810).
  • the inserter (80) further includes a displacement mechanism coupled to the body portion (810) for inserting the penetrating member and the cannula into the subcutaneous compartment (4), as will be discussed below.
  • FIG. 13b shows how the cannula cartridge unit (700) is loaded into the pen-like inserter (80).
  • the unit (700) includes the protector (710) having the opened bottom end (749).
  • the bottom end (749) of the protector (710) is placed inside the bottom part of the inserter having a corresponding ring-shaped section (849).
  • the body of the protector (710) is then pushed into the inserter (80) until a semi-annular protrusion (812) protruding from the interior of the inserter (80) engages with a corresponding annular depression (719) disposed on the exterior of the protector (710).
  • the protector (710) interlocks with the body portion (810), thereby securing the cannula cartridge unit (700) within the inserter (800).
  • FIG. 13c shows the inserter (80) after it has been loaded with the cannula cartridge unit (700), and before its connection to cradle unit (20).
  • the inserter (80) includes means for preventing inadvertent or premature firing of the cannula.
  • FIGS. 14a-f are cross-sectional views of the inserter (80) loaded with a cannula cartridge unit (700) during cannula insertion process carried out with the pen-like inserter (80) shown in FIGS. 13a-c .
  • FIG. 14a shows the inserter (80) after it has been loaded with the cannula cartridge unit (700) and connected to the cradle unit (20) (i.e., placed over the well (310) of the cradle unit (20), as discussed above with regard to FIG10c ).
  • the user initiates the cannula insertion process by pressing simultaneously two lateral triggers (809), (809') disposed on the exterior of the inserter (80), as shown in FIG. 14a .
  • the triggers (809) and (809') are used consecutively to insert the cannula.
  • the inserter (80) includes a spring (813) disposed inside the inserter (80), rod (815) having an annular depression (817) and being coupled to the spring (813), and spring latches (811), (811') suspended on respective recesses (807), (807') (which are disposed near the top portion of the inserter (80)), as shown in FIG. 14b.
  • FIG. 14b shows automatic insertion of the cannula (713) into the subcutaneous tissue (4).
  • the spring latch protrusions (811), (811') are pushed inwardly, thus, releasing them from their respective recesses (807), (807').
  • the spring (813) which is initially in a compressed loaded state, is released and stretches in a downward direction (or direction toward the skin (5)).
  • the spring (813) pushes on the dedicated rod (815) and forces it to move in a downward direction (or direction toward the skin (5)).
  • the spring holding arms that constitute a crown-like section are captured by the annular depression (817) provided in the rod (815).
  • the penetrating cartridge (711) is forced to move in a downward direction toward the well (310).
  • the penetrating member (716) and cannula (713) pass through the well (310) and are inserted into the subcutaneous compartment (4).
  • FIG. 14c shows how the penetrating member (716) is retracted.
  • the retraction is carried out manually by the user.
  • the user pushes a lever (803) in an upward direction, where the lever is connected to the rod (815) and is accessible to the user through a window (804) in the inserter's main body portion, as can be seen in FIG. 14d .
  • This causes the rod (815) with the penetrating member (716) to retract, and the spring (813) to compress into its pre-firing state.
  • the retraction process ends when the spring (813) is returned to its loaded state, and the spring latch protrusions (811), (811') become suspended in their respective recesses (807), (807').
  • the cannula hub (714) remains within the well (310).
  • the well (310) includes spring protrusions (715), (715') to help retain the cannula hub (714) within the well (310).
  • the retraction of the penetrating member (716) can otherwise be carried out automatically, e.g., by employing a second retraction spring.
  • FIG. 14e shows the disconnection of the inserter (80) from the cradle unit (20) after the manual retraction process has been completed.
  • the spring (813) returns to its initial loaded state, and the rod (815) is disconnected from the grip portion (712).
  • the user can connect a dispensing patch unit to the cradle unit (20).
  • the protector (710) can then be unloaded from the inserter (80), as illustrated in FIG. 14f . After unloading is completed, the protector (710) containing the penetrating member inside can be disposed.
  • FIGS. 15a-b are side and perspective views of another exemplary inserter (90), according to some embodiments of the present invention.
  • FIGS. 15a-b show a mouse-like inserter (90) pre-loaded with the cradle unit (not shown) and the cannula cartridge unit (not shown).
  • the inserter (90) can be used for both facilitating adherence of the cradle unit to the patient's body and for convenient insertion of the cannula into the subcutaneous tissue.
  • the inserter (90) can include a release button that allows the user to insert the penetrating member and the cannula (not shown in FIGS. 15a-b ) into the subcutaneous compartment.
  • the inserter (90) can also include a compartment for insertion of the cannula cartridge unit (700), as will be discussed below.
  • the inserter (90) can have any desired shape and is not limited to the inserter (90) shown in FIGS. 15a-b .
  • the inserter (90) shown in these figures is provided for exemplary, non-limiting purposes.
  • the cannula cartridge unit (700) can include a handle (720), as illustrated in FIG. 15c , to enable more convenient gripping of the cannula cartridge unit (700) and proper placement of the cannula cartridge unit (700) within the inserter (90).
  • the handle (720) is not limited to any specific shape or size.
  • the protector (710) includes at least one slit (722), (722') disposed opposite to the handle (720). The slits (722), (722') allow pushing of the penetrating cartridge down towards the body of the patient.
  • FIG. 16 is an exploded view of the mouse-like inserter (90), according to some embodiments of the present invention.
  • the inserter (90) includes an inserter base (910), a ratchet flywheel (912), a ratchet crank (914), an insertion lever (916), a loading button (918), a loading spring (920), a flywheel torsion spring (922), a release button (924), a release torsion spring (926), and a housing (928) to secure the above components, and a safety cap (929). Functions of these components will be explained below in more detail.
  • FIGS. 17a-b show connection of the inserter (90) to the cradle unit (20), according to some embodiments of the present invention.
  • FIG. 17a shows engagement of a dedicated recess (902) provided in the inserter (90) with a corresponding protrusion (302) provided in the front end of the cradle base (300). The rear end of the inserter (90) is then pushed down towards the cradle unit (20) and the two units become connected due to a snapping engagement of a latch (304) provided in the rear of the cradle base (300) with a corresponding notch (904) provided in the inserter (90).
  • FIG. 17b shows the inserter (90) being connected to the cradle unit (20).
  • the inserter (90) includes a displacement mechanism that uses a spring-loaded flywheel.
  • the user loads the flywheel torsion spring (922), as illustrated in FIG. 18 .
  • the user first inwardly pushes the loading button (918) (provided on the exterior of the inserter (90)), and thus, couples the loading button (918) with the ratchet flywheel (not shown in FIG. 18 ), and then turns the loading button (918) (as shown in FIG. 18 , in a counterclockwise direction, however in some embodiments loading of the loading button can be carried by turning it in a clockwise direction). This rotational movement tensions, and thus, loads the flywheel torsion spring (922).
  • FIGS. 19a-b show loading of the cannula cartridge unit (700) into the inserter (90).
  • loading of the cannula cartridge unit (700) into the inserter (90) takes place after connecting the inserter (90) to the cradle unit (20) and after loading the flywheel torsion spring (922).
  • the cannula cartridge unit (700) includes the handle (720), as discussed above with regard to FIGS. 15c .
  • the inserter includes at least one spring holder (928), (928') disposed around the opening created in the inserter (90) for receiving the cannula cartridge unit.
  • the user grips the cannula cartridge unit (700) by its handle (720), places it over the well (310), and then pushes the unit (700) into the inserter (90) until it is captured by the spring holders (928), (928'), as shown in FIG. 19c .
  • This ensures that the cannula cartridge unit (700) is properly positioned as required for the cannula insertion process.
  • other ways of securing the unit (700) to the inserter (90) are possible.
  • FIG. 19d is a perspective view of the inserter (90) after it has been connected to the cradle unit (20) and loaded with the cannula cartridge unit (700). As illustrated in FIG. 19d , the inserter is connected to the cradle unit (20) using the latch-recess connection shown in FIGS. 17a-b . The unit (700) is loaded into the opening created in the inserter (90) with the handle (720) protruding away from the unit (700).
  • FIGS. 20a-b shows how the cradle unit (20) is adhered to the user's skin (5).
  • the inserter (90) can be ergonomically configured to allow easy and comfortable holding.
  • the user can attach the cradle unit (20) to the skin (5) by a single movement down, or gradually by first placing the front (or rear) end of the cradle unit (20) on the skin (5) and then pressing the cradle unit (20) to the skin (5).
  • FIG. 21a-i show an exemplary cannula insertion process using the mouse-like inserter (90), according to some embodiments of the present invention.
  • FIG. 21a shows the inserter (90) ready for operation after being adhered to the skin (5). The user then lifts a safety cap (929), which can detachably cover the release button (924) to prevent inadvertent and premature firing of the cannula.
  • FIGS. 21b-d are side and cross-sectional views, respectively, of the initiation of the cannula insertion process initiated by pressing of the release button (924) (as shown in FIG. 21b , the user presses the button (924) in a downward direction, as indicated by an arrow). Pressing of the release button (924) causes the restraining arm (925) of the release button (924) to lift off the ratchet crank (914), as illustrated in FIGS. 21c-d . Thus, the crank (914) rotates via application of the force of the loaded flywheel torsion spring (922), which is partially embedded in the associated ratchet flywheel (not shown in FIGS. 21c-d ).
  • crank (914) rotates, its rotation is converted into linear vertical motion of the insertion lever (916) by means of a crank protrusion (915).
  • the crank protrusion (915) moves along a dedicated slot (917) provided in the lever (916), as shown in FIG. 21e .
  • the insertion lever (916) moves downwards, the penetrating cartridge (711) is shot in a downward direction toward the well (310).
  • the cartridge (711) motion is accomplished using the engagement hooks (930) of the insertion lever (916).
  • the hooks (930) maintain contact with the grip portion (712) of the penetrating cartridge (711) through slits (722) provided in the protector (710) (the slits are not shown in FIG. 21 e) .
  • FIGS. 21f-g schematically show downward thrusting of the penetrating cartridge (711) using the hooks (930), (930') penetrating through the slits (722), (722').
  • FIG. 21f illustrates hooks (930) disposed at the top of the penetrating cartridge (711) in a pre-firing state. As the displacement mechanism is actuated, the hooks (930) move in a downward direction along respective slits (722), as shown in FIG. 21g , thus protracting the penetrating cartridge (711) towards the well (310).
  • FIG. 21h shows another stage of the cannula (713) insertion process, according to some embodiments of the present invention.
  • the penetrating cartridge (711) is disposed within the well (310) and the cannula (713) and penetrating member (716) pass through the well (310) to be inserted into the subcutaneous tissue (4).
  • FIG. 21i shows automatic retraction of the penetrating member (716) as the crank (914) completes its rotation, according to some embodiments of the present invention.
  • the grip portion (712) that holds the penetrating member (716) is pushed in an upward direction and away from the skin (5), thereby removing the member (716) from the subcutaneous compartment (4).
  • the cannula (713) remains disposed in the compartment (4).
  • the cannula hub (714) is also retained within the well (310).
  • FIG. 22 shows how the protector (710) (containing the penetrating member) can be unloaded from the inserter (90) by gripping the protector's (710) handle (720) and pulling the protector (710) out of the inserter (90).
  • the protector (710) (containing the penetrating member) can then be disposed.
  • the unloading of the protector (710) can be performed either before or after the inserter (90) is disconnected from the cradle unit (20).
  • FIG. 23 shows disconnection of the inserter (90) from the cradle unit (20). Disconnection can be accomplished by manually releasing the latch (304) and detaching the inserter (90). Alternatively, the inserter (90) can include a mechanism that releases the latch (304) from the corresponding notch (904), either automatically after the penetrating member has been retracted back into the protector , or upon manual actuation by the user/patient. After disconnecting the inserter (90) from the cradle unit (20), the user can connect a dispensing patch unit (not shown) to the cradle unit (20).
  • FIGS. 24a-b show an embodiment of the mouse-like inserter (90) which allows the user to choose the desired cannula (713) penetration angle.
  • a flexible cannula (713) and a flexible penetrating member (716) are used.
  • the cradle unit (20) can include a well (310), which includes a plurality, e.g., three penetration tunnels (312), (312'), (312"), to allow insertion of the cannula (713) at various angles, as shown in FIG. 24a .
  • FIG. 24b is a cross-sectional view of the inserter (90) provided with a button (990) allowing the user to choose the desired penetration angle.
  • the button (990) is located on the exterior of the inserter (90).
  • the button (990) is illustrated as being deployed within the interior of the inserter (90) for illustration puposes.
  • the button can be disposed anywhere on the inserter (90).
  • the cannula and the penetrating member can be inserted in at a desired angle or position ("L" - left side, "C” - center, "R” - right side).
  • the angle of insertion can be varied by the user and the user can be allowed to select a specific angle of insertion.
  • FIGS. 25a-g show another exemplary inserter (50) that allows the user to choose the desired cannula (713) penetration angle.
  • FIG. 25a shows a cross-sectional view of the inserter (50) attached to the cradle unit (20) adhered to the skin. The inserter (50) is preloaded with the cannula cartridge unit (700).
  • the cradle is provided with three different wells (310), (310'), (310") which are slanted with respect to the cradle unit at different angles to allow various penetration angles.
  • FIGS. 25b-g are side and cross-sectional views of how the user can choose the desired insertion angle by turning the button (52), which is connected to the cannula cartridge unit (700).
  • the cannula cartridge unit (700) Upon rotation of the button (52), the cannula cartridge unit (700) is rotated in a corresponding direction. For example, if a perpendicular insertion is desired (i.e., center), the button (52) is rotated to a center position, thus, rotating the unit (700) to be perpendicular to the skin (5), as shown in FIGS. 25b-c . Right angular insertion is illustrated in FIGS. 25d-e and left angular insertion is illustrated in FIGS. 25f-g . In some embodiments, the button (52) can be rotated to a specific angle of insertion, thus, causing insertion of the cannula at a desired angle. In some embodiments, the inserter (50) illustrated in FIGS.
  • 25a-g can be used for insertion of two cannulae coupled to one dispensing patch unit, where one cannula is used for fluid (e.g., insulin) delivery and the other for continuously monitoring a bodily analyte (e.g., glucose).
  • fluid e.g., insulin
  • bodily analyte e.g., glucose
  • FIGS. 26a-b show another exemplary inserter (70) which is designed to contain a drum member (7000) for storing a plurality of the cannula cartridge units (700).
  • FIG. 26a shows a drum member (7000) that is loaded with several cannula cartridge units (for example, eight cannula cartridge units (700)).
  • the drum member has a dedicated slit (7012) through which hooks (not shown) of an insertion lever (not shown) are able to approach and penetrate the appropriately positioned cannula cartridge unit (700).
  • FIG. 26b shows an inserter (70) containing the drum member (7000).
  • the drum member has a stationary part (7018) and a revolving part (7016).
  • the stationary part (7018) is secured by a dedicated barrel (7014) protruding from the inserter's base (7020), while the revolving part (7016) is free to rotate upon user discretion.
  • the user rotates the revolving part (7016) of the drum for firing an unused penetrating cartridge by turning a switch (7006) located in the exterior of the inserter (70) until it points to the number of the next cannula cartridge unit (700).
  • the switch (7006) is connected to a rotating means (7008) located within the inserter (70), which rotates a wheel (7002) fitted with protrusions (7003).
  • the protrusions (7003) then rotate the revolving part (7016) of the drum member (700), which accommodates the cannula cartridge units (700), by engaging with apertures (7010) located on the circumference of the revolving part (7016) of the drum member.
  • the hook/s (7022) of the insertion lever (7024) penetrate/s through the cannula cartridge unit's (700) longitudinal slit/s (not shown) and approach/es the cannula cartridge unit.
  • the user can initiate the cannula insertion process, which in this embodiment is carried out similarly to what was described with reference to FIGS. 21a-i .
  • the displacement mechanism described above can be configured to allow automatic and/or manual displacement of the penetrating cartridge.
  • a rod can be used to push the cartridge, as described above.
  • the inserter discussed above with regard to FIGS. 1a-26b can accommodate insertion of a subcutaneously insertable element that can include a cannula, a probe, and/or a sensor.
  • the subcutaneously insertable element can be used for fluid delivery and analyte sensing as well as other tasks.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Vascular Medicine (AREA)
  • Dermatology (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Surgical Instruments (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
EP08763617.1A 2007-06-25 2008-06-25 A cannula-insertion device Active EP2170439B1 (en)

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US93715507P 2007-06-25 2007-06-25
US93721407P 2007-06-25 2007-06-25
US93716307P 2007-06-25 2007-06-25
PCT/IL2008/000860 WO2009001346A1 (en) 2007-06-25 2008-06-25 A cannula-insertion device

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EP2170439B1 true EP2170439B1 (en) 2017-07-19

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EP08763618A Withdrawn EP2167174A1 (en) 2007-06-25 2008-06-25 Portable infusion pump with cannula inserter and pain reduction mechanism
EP08763616.3A Active EP2185223B1 (en) 2007-06-25 2008-06-25 A cannula-insertion device

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EP08763616.3A Active EP2185223B1 (en) 2007-06-25 2008-06-25 A cannula-insertion device

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US (4) US8002752B2 (enExample)
EP (3) EP2170439B1 (enExample)
JP (3) JP5385901B2 (enExample)
CN (2) CN101815550A (enExample)
AU (2) AU2008269310A1 (enExample)
DK (2) DK2170439T3 (enExample)
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US20080319414A1 (en) 2008-12-25
AU2008269310A1 (en) 2008-12-31
JP2010531196A (ja) 2010-09-24
EP2185223B1 (en) 2017-07-19
EP2185223A1 (en) 2010-05-19
WO2009001345A1 (en) 2008-12-31
US9808574B2 (en) 2017-11-07
US20100106088A1 (en) 2010-04-29
DK2170439T3 (en) 2017-08-28
US20110288390A1 (en) 2011-11-24
US8715232B2 (en) 2014-05-06
WO2009001347A1 (en) 2008-12-31
JP2010531197A (ja) 2010-09-24
CN101815550A (zh) 2010-08-25
JP5820008B2 (ja) 2015-11-24
CN101784296A (zh) 2010-07-21
WO2009001346A1 (en) 2008-12-31
PL2185223T3 (pl) 2017-10-31
JP5385901B2 (ja) 2014-01-08
JP2014128710A (ja) 2014-07-10
EP2167174A1 (en) 2010-03-31
EP2170439A1 (en) 2010-04-07
AU2008269311A1 (en) 2008-12-31
US8628500B2 (en) 2014-01-14
US8002752B2 (en) 2011-08-23
US20080319416A1 (en) 2008-12-25

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